-67.21% is the change from 61 to 20
Calculation steps:
[( 20 - 61 ) ÷ 61] x 100 = -67.21%
Formula
Percentage change = [(20 - 61) / 61] x 100
Subtract the new number by the original number
20 - 61 = -41
-41 ÷ 61 = -0.6721311475409836
-0.6721311475409836 x 100 = -67.21%